8 ohm should be okay. most speakers come 4 ohm so watch out. You'll be using the internal amp if the tz145 has no preamp sub rca out. Make sure the sub has a similar rms power rating.
8 ohm should be okay. most speakers come 4 ohm so watch out. You'll be using the internal amp if the tz145 has no preamp sub rca out. Make sure the sub has a similar rms power rating.